We extend the already existing two-loop calculation of the effective bottom-Yukawa coupling in the MSSM. In addition to the resummation of the dominant corrections for large values of tg\(\beta \), we include the subleading terms related to the trilinear Higgs coupling \(A_b\) and contributions induced by the electroweak gauge couplings. This calculation has been extended to the NNLO corrections to the MSSM strange-Yukawa coupling. Our analysis leads to residual theoretical uncertainties of the effective Yukawa couplings at the per-cent level.

中文翻译：

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NNLO对底部和奇怪的MSSM Higgs Yukawa联轴器的改进

我们扩展了MSSM中有效底部-Yukawa耦合的现有两环计算。除了恢复大的tg \（\ beta \）值的主导校正之外，我们还包括与三线性希格斯耦合\（A_b \）和电弱规范耦合引起的贡献有关的子引导项。该计算已扩展到对MSSM奇偶校验-Yukawa耦合的NNLO校正。我们的分析导致有效的Yukawa联轴器在百分比水平上的残留理论不确定性。